By my watch it is two o'clock.

我的表是两点钟。

《牛津词典》

My watch is not very accurate.

我的表走得不很准。

《牛津词典》

I'm early—my watch must be fast.

我早了—我的表肯定快了。

《牛津词典》

Now,there came to my ears a low,dull,quick sound, such as a watch makes when inside a piece of cotton.

VOA: special.2009.05.16

it seems to me the right thing to say " about the example is "No, that is my watch."

我觉得好像我应该说,“不，那是我的手表“

耶鲁公开课 - 死亡课程节选

My watch was dissembled for a period of time, perhaps we should say my watch didn't exist during that period of time.

我的手表在修理的时候消失了，我们或许该说我的手表,在修理的那段时间，并不存在。

耶鲁公开课 - 死亡课程节选

Ultimately this happened under my watch, and the failure to control must fall at my door.

BBC: Harlequins chairman stands down

While I was looking the other way on my watch duty, my eldest brother suddenly materialized before me.

NPR: 'A Tale of Music': From 'Literature from the Axis of Evil'

It wasn't until I joined Special Forces, the British Special Air Service, that my watch fetish really took hold.

WSJ: The March of Time